science

Marius (crater)

Marius (crater) is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Marius (crater) rather than just read about it. In short: Marius is a lunar impact crater located on the Oceanus Procellarum. The nearest named crater feature is Reiner to the southwest.

Key takeaways

Marius (crater) belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Marius (crater) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Marius (crater) from memory before moving on to harder problems.

Reference excerpt

Marius is a lunar impact crater located on the Oceanus Procellarum. The nearest named crater feature is Reiner to the southwest. Kepler is located to the east-southeast, and rays from that formation reach the rim of Marius. This impact dates to the Imbrian epoch of the lunar geologic timescale. The floor of Marius has been flooded by basaltic lava, and the surface is relatively smooth and flat. There is no central rise, but a small craterlet Marius G lies in the northeast part of the floor. The crater rim is low and generally circular in form. The surface to the west and north of this crater contains a large number of lunar domes spread across an area over a hundred kilometers in diameter that may be of volcanic origin dubbed the Marius Hills. These domes, if volcanic, may have been formed by magma that is fairly more viscous than the volcanic material that formed the basaltic lunar maria. One of the numerous rilles in the crater's surrounding area has been found to host a probable cave skylight of a lava cave in 2009. Observations by the Japanese probe SELENE indicate the hole is about 90 meters deep, and the roof — the top part of the tube — is about 25 meters thick. This would be a likely location to consider moon colonization should the hole connect to a long enough section of ancient lava tube. The area of this crater was one of the locations proposed for an Apollo mission, but the expedition was subsequently cancelled. About 50 kilometres to the southeast was the landing site of the Luna 7 probe.

Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Marius.

Popular culture Within the Sega CD RPG Lunar: The Silver Star (and all subsequent remakes) there is a region called the Marius Zone, which is named after the Marius crater.

References

Sources

External links Jenner, Lynn; Dunbar, Brian (November 6, 2009). "Landslides in Marius Crater". Lunar Reconnaissance Orbiter. NASA. Archived from the original on 2010-01-12. Retrieved 2010-01-27.

Illustrations

Worked examples

Example 1 — a first encounter with Marius (crater)

Start with the simplest possible case. Write down what Marius (crater) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Marius (crater) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Marius (crater) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Marius (crater)

In research: Marius (crater) appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Marius (crater) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Marius (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ10 quadrangle, so understanding it makes those chapters shorter.
In everyday life: Look for Marius (crater) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Marius (crater)” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Marius (crater) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Marius (crater) means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Marius (crater) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Marius (crater) in simple terms?

Marius is a lunar impact crater located on the Oceanus Procellarum. The nearest named crater feature is Reiner to the southwest.

Why does Marius (crater) matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Marius (crater)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Marius (crater).